Kobelion II VS

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Air compressor is a big source of energy consumption
Generally, the electricity consumption of air compressors accounts for about 25% of the whole factory. The energy efficiency improvement of air compressor plays an important role in reducing energy consumption of the whole factory.

 Electricity Cost ratio in a Factory                                                Life Cycle cost of air compressors

For the choice of most suitable air compressors, it is more important to consider not only its size & power. But also the usage and the working condition of the factory. Possivle to get not only a return exceeding the initial purchasing cost but also an improvement on energy consumption by adopting the most suitable air compressors based on the usage, the air consumption pattern, and the loading condition. As a manufacturer specialized in air compressors, Kobelco could meet customer's needs of energy saving.


  • Maximum level of discharge volume in the class all over the  world
  • Maximum level of energy efficiency in the class all over the world
  • New type of Kobelion's screw unit installed
  • Kobelion's Inverter Control (V.S.D. Control)
  • High Efficiency Interior Permanent Magnet Motors (IPM Motor)
  • Built-in overhang direct-couplig construction
  • Wide range control
  • Inverter cooling fan
  • Energy saving design of buit-in dryer's drain solenoid valve
  • Two-unit alternate operation function of new type of electronic monitor
  • Electric terminal for group control operation
  • Maximum level of discharge volume in the class all over the world
    Achieved the Maximum level of discharge volume in the class all over the world by enlarging the size of screw rotors and optimizing the rotor profile under the R & D of new Kobelion's screw rotors.
    Maximum level of energy efficiency in the class all over the world
    Increased discharge volume in through pursuit of energy efficiency in Kobelion II series. Especially in 22kW machine range, achieved much better performance than the ones of other manufacturer's machine.
    Wide range & optimal capacity control by Kobelion's inverter
    Possible to perform better energy saving efficiency at lower loading by doing V.S.D. control according to air demands in Kobelion's inverter series. VS series, which have High Efficiency Interior Permanent Magnet Motors (IPM Motor), could perform better energy saving features especially because of the differece of mechanical structure and V.S.D. control range, comparing with other compressors having general-purpose inverter. Achieved more energy saving effect by 44% than conventional units in Kobelion's inverter series which could perform supreme level of energy saving effects in wide range
    More energy saving effect by 7% thanks to High Efficiency Interior Permanent Magnet Motors (IPM Motor)
    Adoption of High Efficiency Interior Permanent Magnet Motors (IPM Motor) than the ones of other inverter compressors having normal induction motor. Possible to perform much better energy saving effects by using IPM high-speed motor + specifically designed inverter than the ones of other compressors having normal induction motor. Higher efficiency by minimizing energy loss thanks to adoption of built-in overhang direct-coupling construction between screw unit & motor
    Buit-in overhanf direct-coupling construction
    Adoption of built-In overhang direct-coupling construction to minimize energy loss. Energy loss is minimized by eliminating mechanical loss at power trasmission components, such as belts and gears. And, the buitl-In overhang direct-coupling construction & totally enclosed structure of IPM high-speed oil-proof motor do not need to have mechanical seal, thus thant could also lead to the reduction of menchanical loss.
    Energy saving by about 50% thanks to inverter control of cooling fan
    Wasterful energy consumption is minimized by the control of fan speed in propotion to the discharge air temperature. And, the durability is improved by stabilizing the temperature inside the compressor unit. Moreover, further noise reduction could be achieved by inverter control of cooling fan.
    Increase by maximum 16% thanks to wide range control
    Possible to supply the maximum discharge volume according to operating discharge pressure by wide range control (Constant power control & Constant pressure control)
    Energy saving logic function for optional control
    Possible to get maximum 6% of energy saving effect by Energy saving logic function,which could minimize excessive load operation for optimal control according to air usage status, installed in AG Series
    No belt structure in all models in the class

    Adoption of step up gear as drive system to minimize energy loss caused by belt drive system. Replacement & Adjustment of the belt is no need

    Adoption of inverter cooling fan  
    Achieved supreme reduction of energy loss by inverter control cooling fan. Wasteful energy consumption is minimized  by the control of fan speed in proportion to the discharge air temperature. And, the durability is improved by stabilizing the temperature inside the compressor unit. in AG/SG Series the inverter cooling fan is avaiable only for 55-75kW machine.
    Technical improvements of basic performances
    Achieved the Maximum level of discharge volume and high efficeincy in this range all over the world by improving all parts of components of screw unit in Kobelion II
    Low Noise

    Achieved excellent noise reduction & vibration reduction by advanced FEM analysis, new designed unit, suitable sound absorber, and so on. And, achieved further noise reduction for Low noise & mild operating sound by Inverter cooling fan.

    FEM analysis : To analyze overall vibration and noise by dividing objects, which have complex shape and qualities, into small parts.
    For Kobelion II, taking higher level of countermeasures for noise reduction & vibration reduction, based on "New FEM analysis" which analyze thoroughly even the surface of objects in the ease that internal pressure vibration is given when compressing

    Pursuit of Clean Air  
    Acquiring clean air by two stage's filtration which is Dust Filter's filtration & Suction Filter's filtration. and suppresing deterioration of lubricating oil quality that could be a main factor of the efficiency drop of oil separation. Achieved 1.6ppm or less of residual oil mist in the discharge air by three stage's oil separation which is centrifugal force separation, gravity force separation and filtration

    Residual-pressure start up  
    In spite of internal residual pressure, possible to start up immediately after motor stop by superior motor torque control in VS series. Possible to do quick air supply by detection of inside residual pressure in AG series. Possible to prevent the pressure drop in emergency case because of no blow-off time of 1 min. That is different from others


    • Permanent life time, New Kobelion's screws rotors installed
    • Maximum Overhaul Interval of 6 years
    • Long time maintenance internal for user's environmental condition
    • Long service life time & high performance, Kobelco genuine lubricating oil
    • No motor bearing structure
    • Double lip sealing structure
    • Large scale Dust Filter installed
    • Water-Removal operatio function installed
    • 3 languanges available, New liquid crystal electronic monitor installed
    • PC connectivity modbus ready
    Possible to use Kobelion's screw rotors permanently
    Screw Rotors developed by Steel manufacturer of Kobelco with Kobelco's own technology. Possible use permanently Screw Rotors, which are made of special steel.
    Very easy daily maintenance
    Adoption of double lip scal for shaft-sealing part. High Efficiency Interior Permanent Magnet Motors (IPM Motor) than the ones of other inverter compressors having normal induction motor. No need to remove drain-water from oil reclaimer thank thanks to Water-Removal operation function. Reduction of the time and the labor for daily maintenance thanks to the electronic monitoring with self diagnose function
    Maximum Overhaul Interval of 6 years
    Achieved the long service lif by adopting combination of reliable angular bearings.
    High performance, Kobelco genuine lubricating oil
    Long service lif, High separation efficiency of oil/water, and less carbon black. Better performance not only for the service life of the lubricating oil itself, but also for the discharge air & the internal system of the unit.
    Large liquid crystal electronic monitor  
    Possible to select 3 languages (English, Japanese, and Chinese) in New liquid
    crystal electronic monitor. Very ease to handle the electronic monitor for daily maintenance such as pressure setting, operation mode setting, languange display setting, and so on. Even in a dark site, possible to read the information displayed on the electronic monitor of translucent type (Backlight type).

    PC connectivity modbus ready
    Output of machine condition to DCS Input of operation signal.
    Energy saving operation function

    In the case of the compressor units having the liquid crystal electronic monitor, possible to do Two-Unit alternate operation without a group control panel by simple wiring.



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